I bought this for my workstation. The far mpre is powerful and quieter than I expected. No problem with heated grips after 35 minutes of continuous use (cleaning difficult aluminum parts before anodizing). holds dremel bits or drills with no problem. Once unscrewed the cartridge itself. Fast enough to destroy Scottish puffs in 10 seconds. I wish it had a speed limit. The handle is made of very soft aluminium. She dropped her pen, jumped into a metal cart and crumpled the pen quite badly. Made it almost useless. Happy! We will buy another one.